Home / 2,119.49-2,921.76-1,488.09

Finding the Fourth Proportional to 2,119.49, 2,921.76 and 1,488.09

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Solution

The fourth proportional to 2,119.49, 2,921.76 and 1,488.09 is: 2,051.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,119.49 : 2,921.76 = 1,488.09 : x
  2. Step 2: Convert to fraction form
    2,119.49/2,921.76 = 1,488.09/x
  3. Step 3: Cross multiply
    2,119.49x = 2,921.76 × 1,488.09
  4. Step 4: Simplify right side
    2,119.49x = 4,347,841.84
  5. Step 5: Solve for x
    x = 4,347,841.84/2,119.49
  6. Step 6: Final answer
    x = 2,051.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.